Door push bar



Jan. 27, 1959 o. w. DICKINSON 2,871,050

DOOR PUSH BAR Filed Nov. 1, 1956 Fig./

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2,871,050 DOOR PUSH BAR Oral W. Dickinson, Anoka, Minn.

Application November 1, 1956, Serial No. 619,823 4 Claims. (Cl.,292-336.3)

This invention relates to an attachment for a door and more particularly to an attachment which will enable a person to unlatch and open a door with a single motion.

An object of this invention is to provide an attachment for a door that has a latch handle which is pivoted to be unlatched, the attachment including a bar that extends preferably transversely across the door and is mounted for motion at one end and pivotally connected at the opposite end to the latch handle, whereby upon application of a force on the bar at any point thereof, the latch handle is actuated and the door opened in one motion.

A further object of the invention is to provide a practical device of this nature which is inexpensive and yet which functions very well. By using the attachment, a person may push the latch bar forward with one hand and gain admittance through the door. This is particularly useful in commercial establishments where there is heavy trafiic through a door, as a door to a kitchen or a door that must be opened by individuals who are burdened with packages, and the invention has other application such as domestic. These are but two examples of a vast number of practical applications for the door attachment.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a horizontal sectional view of a door and means on which the door is hinged, the door being provided with a swinging or pivotal latch handle and an attachment characterizing and exemplifying the invention;

Figure 2 is an elevational view of the, attachment in Figure 1; I

Figure 3 is a fragmentary sectional view taken approximately on the line 33 of Figure 2;

Figure 4 is a sectional view in enlarged scale taken on the line 4-4 of Figure 2;

Figure 5 is a fragmentary sectionalview of a slight modification of the invention;

Figure 6 is a fragmentary sectional view of the other end of the bar of Figure 5 showing its attachment to the latch handle; and i Figure 7 is a transverse sectional view showing a modified form of the invention.

In the accompanying drawing there is a door 10 which schematically represents any type of door. Hinges 12 mount the door in its door frame 14, with door stop 16 having a latch keeper 18 connected thereto. Latch handle 20 is mounted on pivot 22in a slot 24 that extends through the door 10. The latch handle is adapted to be manually actuated on either side of the door in order 0 United States Patent 0 "ice to unlatch thedoor and permit it to be swung on its hinges 12.

Attachment 30 is operatively connected with door 10 and is used by the person desiring to gain admission or leave through the door 10. It comprises a bar 32 which extends transversely across door 10 or in some other relationship to the door, it being preferable that the bar extend on a transverse plane. It is to be clearly understood that other angular relationships of the bar 32 and door 10 may be chosen with minor alteration and adjustment. There are means 34 atone end of the bar movably connecting it to the door 10. These means consist of binge 36, having an intermediate hinge plate 38 and two hinge pins 40 and 42 at opposite ends thereof. The hinge pin 40 is connected to plate 44 by the hinge knuckles 46, while hinge pin 42 connects bar 32 to plate 38 by hinge knuckles 48. Plate 44 is connected by fasteners 50 to the door 10. Coil spring 54, having one end 56 reacting on intermediate plate 36 and the opposite end 58 reacting on bar 32, is concentrically arranged on hinge pin 42 and constantly biases the bar 32 outwardly from the door 10. Accordingly, the spring acts as an automatic return for the bar after it is depressed.

Means 60 at the opposite end of bar 32 connect the bar to the latch handle 20. These means consist of a shackle v62 extending around the handle 20 and bolted to mounting plate 64. The mounting plate has a hearing 66 connected with it through which hinge pin 68 passes. This pin also passes through aligned apertures in the furcations 69 of the bifurcated bar 32.

Attention is now invited to Figures 5 and 6 which are used to show that other structural adaptations of the principles of the invention may be arrived at. In these figures the door 10 is identical in all respects to the door 10 of Figure 1 and has latch handle 20 engageable with latch keeper 18 as in Figure 1. Attachment 70 consists of a bar 72 having means 74 at one end displaceably or movably connecting it to door 10. These means include a spring 75 of the leaf variety. The spring is made with a U-shaped end 76 that is bolted or otherwise rigidly connected to one end of the bar 72. The opposite end of the spring is approximately U-shaped and terminates in a mounting plate 78 which is connected by fasteners 80 to the door 10.

The opposite end of bar 72 is bifurcated as at 82 and there is a hinge pin 84 extending through the furcations thereof. This hinge pin extends through the bore in the bearing 86 at the extremity of handle 20.

Attention is now invited to Figure 7 wherein attachment is shown mounted on the latch end of bar 32 and more particularly in the furcations 69 thereof. Attachment 100 comprises a rubber expander 101 having a bead 102 adapted to abut the inner surface of bar 32 and to be placed on latch handle 104. Shackle 106 has its ends 108 and 109 mounted pivotally in apertures in the furcations 69 and opposite ends brought together and held in place by means of bolt and nut assembly 112. The shackle extends around and contacts the expander 101, holding the attachment 100 assembled.

The embodiment of Figure 7 shows how the invention allows for odd shaped latch handles and at the same time permits the handle to move separately from the bar 32.

In operation of the attachments 30, 70, 100 or any other attachment falling within the purview and scope of the invention, when a force is applied to the bar thereof at any point along the bar, one end of the bar is displaced toward the door against the return bias of the spring. At the same time the opposite end of the bar pivots and moves handle 20 in a pivotal manner about its pin, thereby unlatching it. Inasmuch as the force necessary to displace the bar in a direction to open the door is the same as that required to unlatch the door, the door unlatches and is open in the same motion.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. For use on a door that has a latch handle, an attachment to actuate the handle and open the door in one motion, said attachment comprising a bar which extends transversely across the door, means mounting one end of said bar on the door for movement toward and away from the door, means pivotally connecting the opposite end of the bar to the latch handle so that said latch handle is actuated when any part of said bar is pushed, said means forming the pivotal connection between the bar and latch handle having a member mounted on said latch handle, said member being compressible and flexible so that it is adapted to distort to various shapes to fit various shapes of handles and so that said member is capable of yielding in response to movement of said bar, and fastening means securing said member to said bar.

2. The attachment of claim 1 wherein said compressible member has a bead protruding from the outer surface thereof and disposed between the latch handle and said bar, said bead adapted to compress and flex.

3. The attachment of claim 1 wherein said means securing said member to said bar comprises a shackle secured to said bar and embracing said flexible member and clamping said flexible member to said handle and holding said member attached to said bar.

4. The attachment of claim 2 wherein said means securing said member to said bar comprises a shackle secured to said bar and embracing said flexible member and clamping said flexible member to said handle and holding said member attached to said bar.

References Cited in the file of this patent UNITED STATES PATENTS 975,456 Prevost Nov. 15, 1910 1,056,937 Pratt Mar. 25, 1913 1,105,252 Carstens July 28, 1914 1,605,989 Rucker Nov. 9, 1926 2,104,618 Hasenfuss Jan. 4, 1938 2,320,298 Phillips May 25, 1943 2,481,990 Ehrke Sept. 13, 1949 

